science_spies
We now have proof a supernova exploded perilously close to Earth 2.5 million years ago -
We now have proof a supernova exploded perilously cl...


Physics |
We now have proof a supernova exploded perilously cl...
https://imgs.plurk.com/Qye/hlL/D8BVtcIjU6Tbixww90JUtD34Y4u_lg.jpg
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